absorbed by England) Serb Kingdom (1217–1395; regal title not succeeded) Crown of Castile (1230–1479; became Kingdom of Spain) Aztec Empire (known to exist before 1233 Conquered by Spain 1521; Puppet monarchy through 1565) Sukhothai Kingdom (1238–1438; absorbed into Ayutthaya Kingdom) Lanna (1259–1939) Principality of Andorra (1278–1993; became constitutional monarchy) Ottoman Empire (1299–1923) Ajuran Empire (13th-17th) Serbian Empire (1345–1371; dynasty extinct) Ayutthaya Kingdom (1350–1767; became Kingdom of Siam) Kingdom of Vidin (1356–1396; absorbed into the Ottoman Empire) Principality of Muscovy (1362–1576; became Tsardom of Russia) Sultanate of Brunei (c. 1363 century – 1959; became absolute monarchy with a constitution) 1st Kingdom of Ava (1364–1527) Kingdom of Bosnia (1377–1463) Joseon Dynasty (1392–1897; became Korean Empire 1897–1910, then Japanese occupation) Ashanti (c. 1400 – 1900; became subnational monarchy of Gold Coast) Sultanate of Malacca (1400–1511; ended with Portuguese occupation) Kelantan (1411–1499; became subnational monarchy of Malacca) Sultanate of Sulu (1412–1915; ceded temporal powers to the United States; became subnational monarchy of the Philippine Islands) Ryūkyū Kingdom (1429–1879; annexed to Japan) Khmer Kingdom (1431–1954; became Kingdom of Cambodia) Kingdom of Spain (1479–1812; became constitutional monarchy) Persia (1500–1935; became Kingdom of Iran) Sultanate of Maguindanao (1505 – 19th century; occupied by Spain) Bunyoro (c. 1520 – 1899; became subnational monarchy of the United Kingdom) Pegu Kingdom (1527–1531) Sultanate of Johor (1528–1946; became subnational monarchy of Malayan Union) Sultanate of Perak (1528–1874; became subnational monarchy of the United Kingdom) Maguindanao Sultanate (1205 – 19th century; annexed by Spain) Taungoo Kingdom (1531 – c. 1610) Tsardom of Russia (1576–1721; became Russian Empire) 2nd Kingdom of Ava (1613–1752) Enlightenment and later Constitutional monarchies A constitutional monarchy is a form of monarchical government established under a constitutional system which acknowledges an elected or hereditary monarch as head of state. Unitary constitutional monarchies Unitary constitutional monarchies are unitary states which are governed constitutionally as one single unit, with a single constitutionally created legislature. Kingdom of England (c. 1630 – 1707; merged with Kingdom of Scotland to become Kingdom of Great Britain) Kingdom of Prussia (1701–1918) Kingdom of Great Britain (1707–1800, became United Kingdom of Great Britain and Ireland) Kingdom of France (1791–1792; Became republic in French Revolution) United Kingdom of Great Britain and Ireland (1800–1921; became United Kingdom of Great Britain and Northern Ireland) Kingdom of Bohemia (1806–1918; dissolved after World War I) Kingdom of Hungary (1806–1867; became part of Austro-Hungarian Empire) Kingdom of Spain (1812–1873; First Spanish Republic, 1873–1874;